100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
ANS Principle of drug action £7.49   Add to cart

Lecture notes

ANS Principle of drug action

 2 views  0 purchase

ANS Principle of drug action

Preview 1 out of 2  pages

  • July 25, 2023
  • 2
  • 2022/2023
  • Lecture notes
  • Dr jones
  • All classes
All documents for this subject (3)
avatar-seller
amanhayre4
Principles of Drug Action – 4PY009 – Detailed lecture notes
Autonomic Nervous system (ANS), Part 3 (week 3)


The adrenal glands are innervated by presynaptic
sympathetic neurons. This is the only exception to the two-
neuron arrangement. These presynaptic neurons release ACh
that binds to and stimulates nicotinic receptors on
catecholamine-secreting cells in the adrenal medulla, so
causing principally the release of adrenaline into the blood.

Embryologically, sympathetic ganglia and the adrenal
medulla arise from the same source. So, cells of the adrenal
medulla are in effect modified postganglionic sympathetic
neurons.

NA is mostly released from neurons, so is a neurotransmitter.
Adrenaline is mostly released from the adrenal glands, so is a
hormone. The division between hormones and
neurotransmitters is, however, becoming increasingly
blurred.

The British convention still seems to be to use the names NA
and adrenaline. The recommended international non-
proprietary names are now, however, norepinephrine and
epinephrine.

Adrenoceptors are divided into two main types:

 A-receptors, which generally mediate the excitatory
effects of the sympathetic nervous system.

 B-receptors, which generally mediate the inhibitory
effects of the sympathetic nervous system.

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller amanhayre4. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for £7.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

72042 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now

Start selling
£7.49
  • (0)
  Add to cart